Problem Uploading

I have an Arduino Mega ADK connected to my Lenovo Laptop which runs Arduino on Windows 10.

I have a sketch which has no errors [as shown by the Arduino 1.6.7 IDE], which I am trying to upload to my Mega, but it fails.

What should I do ??

You have 214 posts. You know what needs to be in a post. Or do I have to link the "How to use this forum" sticky?